"Monsoon rains are likely to start from upper parts of the country that will spread towards central and southern parts of the country during the week," he told.
He said during first spell of monsoon, widespread rains with isolated heavy thundershowers, accompanied by strong gusty winds are expected in Islamabad, Punjab, Khyber Pakhtunkhwa, FATA and Kashmir.
"Scattered rains/dust-thundershowers are also expected in Sindh and Balochistan during the coming week," he added.
He said in Sindh monsoon rains would start during the first week of July. "The province along with Karachi would receive heavy rains", he added.